Abstract
The catalytic, corrosion and sintering properties of Pt/C and Pt 3Ni1/C catalysts are evaluated using an accelerated durability test (ADT). The catalytic activity and dissolution rate of Ni from a Pt3Ni1/C alloy catalyst are estimated in the same time domain. A strong correlation exists between the amount of Ni dissolved and the oxygen reduction activity of the catalyst. To compare the sintering resistance of both the Pt/C and Pt3Ni1/C catalyst, the particle size of the catalysts before and after the ADT is measured by using transmission electron microscopy. The Pt3Ni1/C alloy, due to anchor effects in its structure, shows high sintering resistance.
Original language | English |
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Pages (from-to) | 795-799 |
Number of pages | 5 |
Journal | Electrochemistry Communications |
Volume | 6 |
Issue number | 8 |
DOIs | |
Publication status | Published - 2004 Aug |
Bibliographical note
Funding Information:Acknowledgements. We thank Ms. Ulla Kiiski and Ms. Asja Mile-tic for skillful technical assistance and Ms. Marja-Leena Rissanen for skilled secretarial help. M.S.-B. was a recipient of a short-term fellowship from the Programme on Developmental Biology of the European Science Foundation. This work was supported by the Medical Research Council of the Academy of Finland, the Uni-
All Science Journal Classification (ASJC) codes
- Electrochemistry